
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
+5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit optimized for the DCS/PCS band, R1 = R4 = 806 Ω , R2 = R5 = 2.32k Ω , V CC = +4.75V to +5.25V, RF and
LO ports are driven from 50 Ω sources, P LO = -3dBm to +3dBm, PRF = -5dBm, f RF = 1700MHz to 2000MHz, f LO = 1510MHz to
1810MHz, f IF = 190MHz, f RF > f LO , T C = -40°C to +85°C. Typical values are at V CC = +5.0V, P RF = -5dBm, P LO = 0dBm,
fRF = 1800MHz, f LO = 1610MHz, f IF = 190MHz, T C = +25°C, unless otherwise noted.) (Note 6)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RF Input Return Loss
LO and IF terminated into matched
impedance, LO on
21
dB
LO Input Return Loss
LO port selected, RF and IF terminated into
matched impedance
LO port unselected, RF and IF terminated
into matched impedance
20
19
dB
IF Output Impedance
Z IF
Nominal differential impedance of the IC’s
IF outputs
200
Ω
RF terminated into 50 Ω , LO driven by 50 Ω
IF Return Loss
source, IF transformed to 50 Ω using
external components shown in Typical
12.5
dB
Application Circuit
RF-to-IF Isolation
f RF = 1700MHz for min value
30
39
dB
LO Leakage at RF Port
2LO Leakage at RF Port
LO Leakage at IF Port
(Notes 8, 10)
(Note 8)
(Note 8)
-31
-20
-40
-24.7
-16
-27
dBm
dBm
dBm
RFMAIN converted power measured at
Channel Isolation
IFD_, relative to IFM_, all unused ports
terminated to 50 Ω
RFDIV converted power measured at IFM_,
relative to IFD_, all unused ports terminated
to 50 Ω
40
40
49
49
dB
LO-to-LO Isolation
LO Switching Time
P LO1 = +3dBm, P LO2 = +3dBm,
f LO1 = 1610MHz, f LO2 = 1611MHz
50% of LOSEL to IF settled within 2
degrees
40
56
50
dB
ns
+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit. Typical values are at V CC = +3.3V, P RF = -5dBm, P LO = 0dBm, f RF = 1800MHz, f LO = 1610MHz,
f IF = 190MHz, T C = +25°C, unless otherwise noted.) (Note 6)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Conversion Gain
G C
8.4
dB
Flatness over any one of three frequency
bands:
Conversion Gain Flatness
f RF = 1710MHz to 1785MHz
±0.1
dB
f RF = 1850MHz to 1910MHz
f RF = 1920MHz to 1980MHz
Gain Variation Over Temperature
TC CG
T C = -40°C to +85°C
-0.009
dB/°C
6
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